Injection engine



Jan. 2, 1934'. LANG 1,941,805

INJECTION ENGINE Original Filed Dec. 1, 1930 J77 7/19/7201? Fa 2.2 242mg.

K 1 MW,

Patented Jan. 2, 1934 UNITED STATES PATENT OFFICE INJECTION ENGINE stein Original application December 1, 1930, Serial and in Germany December 27,

1929. Divided and this application June 30, 1933. Serial No. 678,353

1 Claim.

My invention relates to a fuel injection internal combustion engine of the type which embodies an air chamber in which fluid is compressed during the compression stroke of the piston and from which the fluid issues during the working stroke of the piston.

This application is a division of my copending application, Serial No. 499,223, filed December 1, 1930, for fuel injection internal combustion engines.

The purpose of the instant invention is to provide an improved construction wherein organized rotary turbulence of the mixture in the combustion chamber is secured.

In its more specific aspects, the purpose of the instant invention is to embody the above in a double-acting engine. I

My invention is illustrated in the accompanying drawing, in which Figure 1 is a vertical axial sectional view of those portions of the engine with which my invention is concerned; and

Figure 2 is a horizontal sectional view taken on the plane of the line P-Q of Figure 1.

The drawing shows the cylinder, and opposed pistons which reciprocate therein. Figure 1 shows the pistons in the position of greatest compression, and the space between the pistons constitutes the combustion chamber 0. A passage- 0 way, formed in the cylinder casting, enters each side of the combustion chamber c, tangentially, as shown. The main axis of each of these passageways lies horizontally alongside the cylinder,

and each of them curves inwardly to the com! bustion chamber, communicating therewith pref erably through an oblong slot, as shown.

An air storagechamber a and a fuel nozzle b is provided for each of these passageways, lying on the main axis thereof referred to. The air 0 chamber a is formed in a plug, which is inserted in the end of the passageway, the air chamber being thus located so that the opening therefrom is directed toward the curved part of the passageway and toward the combustion chamber, as shown. The fuel nozzle b is oppositely disposed, so that fuel issuing therefrom issues toward the airschamber.

The drawing shows two tangential air chamber and fuel nozzle sets, but it will be understood that more than two such sets may be provided.

Upon the compression stroke of the pistons, fluid from between the pistons is compressed in the chamber a, and upon the working stroke of the pistons this fluid issues from the chamber at high velocity, the streams of fluid being directed tangentially into the combustion space 0, as indicated by the arrows in Figure 2, thus imparting high turbulence to the mixture in the combustion space.

Suitable mechanism is of course provided to cause the nozzle 1) to inject fuel at the proper time in the cycle, beginning with the final com- 75 pression. This injection is into the passageways, as will be clear, and contact of crude oil with the pistons is prevented.

The arrangement may be used for two-stroke and also for four-stroke cycle engines.

I claim:

In combination in an injection engine, a cylinder and a piston operating therein, said cylinder having a passage opening into the cylinder through the peripheral wall and substantially tangentially thereof, said passage extending outward from the cylinder bore and substantially tangent thereto, an air storage chamber opening into the outer end of the passage through an orifice disposed to eject air into said passage lengthwise and toward the inner end thereof, and an injection nozzle opening into said passage adjacent the inner end thereof and outward beyond the cylinder bore, said nozzle being disposed to inject fuel lengthwise of the passage and toward the outer end thereof.

FRANZ LANG. 

